"In my opinion, based on what I've seen, it was done by Iran," he told reporters on the presidential plane, AP writes.
Satellite images, expert analyses, US sources with insight and public information from both the US and Israeli militaries suggest the opposite: that the explosion at the school was caused by an American airstrike, the news agency writes.
The airstrike was directed at a nearby facility linked to Iran's military, but reportedly also hit the school.
American media outlets such as NBC and ABC, as well as the Reuters news agency, have previously reported that the United States is likely responsible.
